Internship - Optical Engineer Summer 2026

Introduction to the job

ASML US brings together the most creative minds in science and technology to develop lithography machines that are key to producing faster, cheaper, more energy-efficient microchips. We design, develop, integrate, market and service these advanced machines, which enable our customers - the world’s leading chipmakers - to reduce the size and increase the functionality of their microchips, which in turn leads to smaller, more powerful consumer electronics. Our headquarters are in Veldhoven, the Netherlands, and we have 18 office locations around the United States including main offices in Chandler, Arizona, San Jose and San Diego, California, Wilton, Connecticut, and Hillsboro, Oregon.

Your Assignment:

ASML’s YieldStar  Sensor Group in Wilton CT is looking for a co-op to join the team for a period of at least 6 months to focus on a project in the area of optical engineering to support current or future YieldStar product. The candidate should be pursuing a degree in Physicist/Engineer with preference to optical engineering that give him/her the ability to support and develop optical/photonic sensor systems used within ASML’s photolithography tools. 

Key components of this position are:

Using Optical engineering expertise the candidate is expected to perform work in some of these general area of Optical Engineering:

• Perform Optical  design, optical tolerancing and modeling with CodeV and/or Zemax.

• Physical Optics Simulation (wave propagation, partial coherence calculation, Polarization optics modeling and other optical effects) in Matlab, FRED and CodeV  or other suitable design tools.

• Building and aligning complex sensors using diverse mechanical, collimation and interferometry.

• Working knowledge with diverse optical devices and sensors: objectives, collimation and relay optics, fibers, cameras and detectors.

Your Profile:

Looking for candidate That is currently pursuing a degree in optical engineering or closely related areas of engineering and physics. Preference for a candidate pursuing a Master or a Ph.D degrees. Undergraduate students with specific expertise in key areas of optical design and optical systems will be considered.

Student must demonstrate some experience in some of these areas:

• Optical design and tolerancing using CodeV or equivalent SW package.

• Physical optics modeling with FRED or equivalent SW package.

• Optical sensors alignment experience using diverse alignment strategy and tools like optical collimators, mechanical gaging and interferometers.

• Optical sensor metrology test design and build.

• Expertise with diverse optical technologies and devices: polarization devices, relays, objectives, light sources, fibers, camera and detectors.

Skills

Working at the cutting edge of tech, you’ll always have new challenges and new problems to solve – and working together is the only way to do that. You won’t work in a silo. Instead, you’ll be part of a creative, dynamic work environment where you’ll collaborate with supportive colleagues. There is always space for creative and unique points of view. You’ll have the flexibility and trust to choose how best to tackle tasks and solve problems. 

To thrive in this job, you’ll need the following skills: 

• Can observe and respond to people and situations and interact with others encountered in the course of work.  

• Can learn and apply new information or skills. 

• Must be able to read and interpret data, information, and documents.

• Strong customer focus and commitment to customer satisfaction through prioritization, quality, efficiency and professionalism.

• Ability to complete assignments with attention to detail and high degree of accuracy. 

• Proven ability to perform effectively in a demanding environment with changing workloads and deadlines. 

• Result driven-demonstrate ownership and accountability.

• Identifies bottlenecks and drives improvements.

• Work independently or as part of a team and follow through on assignments with minimal supervision. 

• Demonstrate open, clear, concise and professional communication.

• Ability to establish and maintain cooperative working relationships with manager, co-workers and customer. 

• Work according to a strict set of procedures within the provided timelines. 

Other information

This position is located on-site in Wilt